[ Identification | Description | Input parameters | Links ]

The Test_Magnon_bcc_TAS Instrument

Generic TAS instrument for test of samples with dispersions.

Identification

• Site: Tests_samples
• Author: Kim Lefmann (lefmann@nbi.ku.dk)
• Origin: UCPH
• Date: 22.07.2018

Description

Generic TAS instrument for test of samples with dispersions. Modeled over the RITA-2 instrument at PSI (one analyzer only). The instrument is able to position in q-space at q=(h 0 0) and fixed Ei and Ef. This can be used to longitudinal constant-E scans or constant-q scans. In addition, transverse constant-E scans can be made by scanning the sample orientation A3.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
hw	meV	Neutron energy transfer	0.5
Ef	meV	Final neutron energy	5
A3offset	deg	sample rotation around a vertical axis	0
A3auto	1	Flag for selecting automatic setting of A3 to have q-vector along [h 0 0] (0=manual; 1=auto)	1
aa	AA	lattice parameter for cubic system (passed on to the sample component)	4.5
qh	1	Length of the q-vector in r.l.u., sets the value of scattering angle A4. If A3auto=1, then A3 is set to q=[qh 0 0]	1.1
highres	1	Flag for setting unrealistic high resolution (used for fine testing) (0=standard TAS / RITA2; 1=high resolution TAS)	0
sample_J	meV	Nearest Neighbor magnetic interaction in sample	0.2
TT	K	temperature	300
FerroMagnet		Flag: 1 if ferromagnet, 0 if AFM	0
Verbose	1	Flag for printing of test statements from magnon component (0=silent, 1=print)	0

Links

• Source code for Test_Magnon_bcc_TAS.instr.

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[ Identification | Description | Input parameters | Links ]

Generated on 2022-12-15 07:34:57

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Last Modified: Friday, 31-Mar-2023 14:24:13 CEST